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| author | AnilKumar Ch <anilkumar@ti.com> | 2012-08-31 15:07:20 +0530 |
|---|---|---|
| committer | Benoit Cousson <b-cousson@ti.com> | 2012-10-29 16:56:25 +0100 |
| commit | efeedcf2a9137c9be0b833cb76b05315fe231197 (patch) | |
| tree | f1edfe7ba688fe75e8ac0815b040eaf59c038826 /arch/arm/boot | |
| parent | 5a8095e9d02da19f3bab738e82c0520ecd62d6af (diff) | |
| download | blackbird-obmc-linux-efeedcf2a9137c9be0b833cb76b05315fe231197.tar.gz blackbird-obmc-linux-efeedcf2a9137c9be0b833cb76b05315fe231197.zip | |
ARM: dts: AM33XX: Add device tree OPP table
Add DT OPP table for AM33XX family of devices. This data is
decoded by OF with of_init_opp_table() helper function.
Also adds cpu0 supply name to the corresponding dts files.
cpu0-supply name is used by cpufreq-cpu0 driver to get the
regulator pointer for voltage modifications.
Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Diffstat (limited to 'arch/arm/boot')
| -rw-r--r-- | arch/arm/boot/dts/am335x-bone.dts | 6 | ||||
| -rw-r--r-- | arch/arm/boot/dts/am335x-evm.dts | 6 | ||||
| -rw-r--r-- | arch/arm/boot/dts/am33xx.dtsi | 15 |
3 files changed, 27 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/am335x-bone.dts b/arch/arm/boot/dts/am335x-bone.dts index c634f87e230e..91eee97371ea 100644 --- a/arch/arm/boot/dts/am335x-bone.dts +++ b/arch/arm/boot/dts/am335x-bone.dts @@ -13,6 +13,12 @@ model = "TI AM335x BeagleBone"; compatible = "ti,am335x-bone", "ti,am33xx"; + cpus { + cpu@0 { + cpu0-supply = <&dcdc2_reg>; + }; + }; + memory { device_type = "memory"; reg = <0x80000000 0x10000000>; /* 256 MB */ diff --git a/arch/arm/boot/dts/am335x-evm.dts b/arch/arm/boot/dts/am335x-evm.dts index 185d6325a458..4707cda9e4fe 100644 --- a/arch/arm/boot/dts/am335x-evm.dts +++ b/arch/arm/boot/dts/am335x-evm.dts @@ -13,6 +13,12 @@ model = "TI AM335x EVM"; compatible = "ti,am335x-evm", "ti,am33xx"; + cpus { + cpu@0 { + cpu0-supply = <&vdd1_reg>; + }; + }; + memory { device_type = "memory"; reg = <0x80000000 0x10000000>; /* 256 MB */ diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi index bb31bff01998..b4e3e4793b95 100644 --- a/arch/arm/boot/dts/am33xx.dtsi +++ b/arch/arm/boot/dts/am33xx.dtsi @@ -25,6 +25,21 @@ cpus { cpu@0 { compatible = "arm,cortex-a8"; + + /* + * To consider voltage drop between PMIC and SoC, + * tolerance value is reduced to 2% from 4% and + * voltage value is increased as a precaution. + */ + operating-points = < + /* kHz uV */ + 720000 1285000 + 600000 1225000 + 500000 1125000 + 275000 1125000 + >; + voltage-tolerance = <2>; /* 2 percentage */ + clock-latency = <300000>; /* From omap-cpufreq driver */ }; }; |
